16303241281 has 8 divisors (see below), whose sum is σ = 17293257000. Its totient is φ = 15316670208.

The previous prime is 16303241267. The next prime is 16303241309. The reversal of 16303241281 is 18214230361.

It can be written as a sum of positive squares in 4 ways, for example, as 1762740225 + 14540501056 = 41985^2 + 120584^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16303241281 - 2²⁹ = 15766370369 is a prime.

It is a super-2 number, since 2×16303241281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16303241261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851406 + ... + 870343.

It is an arithmetic number, because the mean of its divisors is an integer number (2161657125).

Almost surely, 2^16303241281 is an apocalyptic number.

It is an amenable number.

16303241281 is a deficient number, since it is larger than the sum of its proper divisors (990015719).

16303241281 is a wasteful number, since it uses less digits than its factorization.

16303241281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722323.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 16303241281 in words is "sixteen billion, three hundred three million, two hundred forty-one thousand, two hundred eighty-one".